1
Q
The Execution Unit consists of:
- a control system ,
- ALU,
- Flag register
- four general purpose registers(AX,BX,CX,DX), -pointer registers (SP,BP) - and Index registers(SI,DI)
where, each register and the ALU is of 16-bits.
A
The control circuitry controls the internal operations .
2
Q
The decoder in the execution unit decodes the instructions fetched from the memory into a series of actions.
A
The ALU can:
- add ,
- subtract,
- perform operations like logical AND,OR,XOR,
- increment,
- decrement,
- complement ,
- and shift the binary numbers.
